why do you crimp the connector 3x? One for each wire, what is the 3rd?

I’m not sure why you have to crimp 3x’s unless their tool is designed that way? I only crimped twice in my engine compartment of my pickup and have had no issues.

Will these work for 10/2 wire at 230V and 20 amps?

You should be able to use on 230 volt 20 amp. The yellow should handle 30 amp minimum. Usually if the wires fit in it. It will work

Do you have the Butt connectors that are 12-10 on one end and 16-14 on the other

No, they are the same on each end. The colors indicate the size, as well they are labeled.

Can these be submerged? I want to use them for a bilge pump.

Yes you can, the discription of the product says they are Marine Grade Waterproof Wire Connectors.

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Heat Shrink But Connectors

Product ID: 127319820

Details

Color
Red blue white
Connector Type
Crimp
Contact Material
Copper
Insulation Material
Nylon
Terminal
Butt Terminal

🌊Marine-grade waterproof

🔥Heat shrink with hot melt adhesive

🔧330PCS versatile kit

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1808858₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Color
Red blue white
Connector Type
Crimp
Contact Material
Copper

Description

⚡ Seal the deal with marine-grade power and precision!

PREMIUM COPPER CORE - Thicker copper core for superior conductivity and safer, long-lasting crimps.
COMPLETE 330 PIECE KIT - All wire gauges covered with 4 colors for quick, precise selection.
HEAT ACTIVATED SEALANT - 3:1 shrink ratio tubing with hot melt adhesive guarantees a secure, flame-retardant, and stretch-resistant bond.
MARINE GRADE WATERPROOF - Saltwater-proof seal ensures reliable connections even in harsh marine environments.
MULTI USE PROFESSIONAL GRADE - Perfect for boats, trucks, stereos, and underground wiring projects—trusted by pros and DIYers alike.

The haisstronica 330PCS Heat Shrink Butt Connectors kit offers a professional-grade, marine-certified solution for waterproof, flame-retardant electrical connections. Featuring a thick copper core and heat-activated adhesive tubing in four color-coded sizes, this kit ensures secure, corrosion-resistant crimps ideal for boats, vehicles, and industrial projects. Compliant with ROHS, ISO, SGS, and CE standards, it delivers reliable performance in demanding environments.

Specifications

ASIN	B07Q3JJRY8
Best Sellers Rank	#1,113 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Butt Terminals
Brand Name	haisstronica
Color	Red,blue,yellow,white
Connector Gender	Male
Connector Type	Crimp
Contact Material	Copper
Customer Reviews	4.8 out of 5 stars 7,678 Reviews
Gauge	22.0
Insulation Material	Nylon
Insulation Material Type	Nylon
Item Dimensions L x W x H	0.79"L x 0.79"W x 0.79"H
Manufacturer	haisstronica
Material	Copper
Material Type	Copper
Maximum Voltage	12 Volts (DC)
Model	HS
Number of Items	330
Part Number	HX1045
Specification Met	CE
Temperature Rating	257 degree fahrenheit
Terminal	Butt Terminal
UPC	192687298006
Unit Count	330 Count

Reviews

S**Y

1.05.2026

M**N

4.04.2026

M**T

26.01.2026

S**N

31.03.2026

J**N

29.12.2025

D**D

29.03.2026

C**E

27.04.2026

G**Z

13.04.2026

J**.

14.10.2024

B**Z

22.11.2021

J**L

1.08.2025

J**P

5.07.2025

R**T

6.11.2025

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1808858₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

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TrustScore 4.5 | 7,300+ reviews

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